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United States Patent |
5,016,939
|
Nishikawa
,   et al.
|
May 21, 1991
|
Canvas top type sunroof structure for motor vehicle
Abstract
Herein disclosed is a canvas top type sunroof structure for a motor vehicle
having an apertured roof. The sunroof structure comprises a pair of guide
members which extend along respective sides of the aperture of the roof; a
canvas top adapted to cover the aperture; a front carry member having a
front part of the canvas top secured thereto, the front carry member being
slidably guided by the guide members; guided carry members slidably guided
by the guide members and carrying thereon a major middle part of the
canvas top; free carry members carried by the guided carry members
respectively, each free carry member carrying thereon the major middle
part of the canvas top; a biasing spring for biasing each free carry
member upward relative to the corresponding guided carry member; a rear
carry member having a rear part of the canvas top secured thereto, the
rear carry member being slidably guided by the guide members; an electric
drive device for driving the front carry member forward and rearward along
the guide members; and a lock device for selectively locking and unlocking
the rear carry member to a rear given portion of the roof.
Inventors:
|
Nishikawa; Hiromitsu (Yokohama, JP);
Kato; Yuichi (Yokohama, JP)
|
Assignee:
|
Ohi Siesakusho Co., Ltd. (Yokohama, JP)
|
Appl. No.:
|
334285 |
Filed:
|
April 6, 1989 |
Foreign Application Priority Data
| Apr 07, 1988[JP] | 63-84119 |
| Apr 07, 1988[JP] | 63-84120 |
| Apr 07, 1988[JP] | 63-84122 |
Current U.S. Class: |
296/219; 296/223; 296/224 |
Intern'l Class: |
B60J 007/06 |
Field of Search: |
296/217,219,223,224
|
References Cited
U.S. Patent Documents
1738060 | Dec., 1929 | Barnes | 296/219.
|
2025874 | Dec., 1935 | Lange | 296/219.
|
2103372 | Dec., 1937 | Lange | 296/219.
|
3658378 | Apr., 1972 | Sutren | 296/219.
|
Foreign Patent Documents |
0064027 | Apr., 1985 | JP | 296/219.
|
61-37019 | Mar., 1986 | JP.
| |
0031819 | Feb., 1988 | JP | 296/219.
|
0061629 | Mar., 1988 | JP | 296/219.
|
0061630 | Mar., 1988 | JP | 296/219.
|
0112217 | May., 1988 | JP | 296/219.
|
152750 | May., 1932 | CH | 296/219.
|
Primary Examiner: Pedder; Dennis H.
Attorney, Agent or Firm: Foley & Lardner
Claims
What is claimed is:
1. A sunroof structure for a motor vehicle having an apertured roof, said
sunroof structure comprising:
a pair of guide members which extend along respective sides of the aperture
of said roof;
a canvas top adapted to cover said aperture;
a front carry member having a front part of said canvas top secured
thereto;
guided carry members carrying thereon a major middle part of said canvas
top;
a free carry member connected to each of said guided carry members, each
free carry member carrying thereon the major middle part of said canvas
top;
biasing means for biasing each free carry member upward relative to the
corresponding guided carry member;
a rear carry member having a rear part of said canvas top secured thereto;
means for slidably guiding said front carry member, said guided carry
members, and said rear carry member on said guide members;
electric drive means for driving said front carry member forward and
rearward along said guide members; and
lock means for selectively locking and unlocking said rear carry member to
a rear given portion of said roof;
a first lifting means interposed between each guide member and one lateral
side of said front carry member, for inclining the front carry member
forwardly when said front carry member comes to a front given portion of
the roof aperture;
said first lifting means comprising:
first and second arms which are pivotally connected to each other to
constitute an X-like structure;
a front bracket secured to said front carry member and having a portion to
which one end of said first arm is pivotally connected;
a driven slider connected to said guide member and being slidably guided by
said guide member and having a portion to which the other end of said
first arm is pivotally connected;
a roller carried by said first arm and rotatably mounted on a raised wall
defined by said guide member;
a rear bracket secured to said front carry member and having a portion to
which one end of said second arm is pivotally connected through a pivot
pin, said rear bracket having an elongate slot through which said pivot
pin is slidably passed; and
a drive slider connected to said guide member and slidably guided by said
member and having a portion to which the other end of said second arm is
pivotally connected.
2. A sunroof structure for a motor vehicle having an apertured roof, said
sunroof structure comprising:
a pair of guide members which extend along respective sides of the aperture
of said roof;
a canvas top adapted to cover said aperture;
a front carry member having a front part of said canvas top secured
thereto;
guided carry members carrying thereon a major middle part of said canvas
top;
a free carry member connected to each of said guided carry members, each
free carry member carrying thereon the major middle part of said canvas
top;
biasing means for biasing each free carry member upward relative to the
corresponding guided carry member;
a rear carry member having a rear part of said canvas top secured thereto;
means for slidably guiding said front carry member, said guided carry
members, and said rear carry member on said guide members;
electric drive means for driving said front carry member forward and
rearward along said guide members; and
lock means for selectively locking and unlocking said rear carry member to
a rear given portion of said roof, said lock means including:
a handle bracket slidably engaged with a rail of said guide members;
an operation handle pivotally connected to said handle bracket through a
shaft;
biasing means for pivoting said operation handle in a snap action manner;
a moving bracket secured to said rear carry member, said moving bracket
having an elongate slot through which said shaft passes;
a first link pivotally connected to said handle bracket and having one end
pivotally connected to said moving bracket;
a hook arm to which the other end of said first link is pivotally
connected;
a second link pivotally connected through respective pivot pins to said
operation handle and said first link; and
an engaging means secured to the rear given portion of said roof for
latching a hook portion defined by said hook arm.
3. A sunroof structure for a motor vehicle having an apertured roof, said
sunroof structure comprising:
a pair of guide members which extend along respective sides of the aperture
of said roof;
a canvas top adapted to cover said aperture;
a front carry member having a front part of said canvas top secured
thereto; member communicating with said guide members and being slidably
guided by said guide members;
guided carry members carrying thereon a major middle part of said canvas
top;
a free carry member connected to each of said guided carry members, each
free carry member carrying thereon the major middle part of said canvas
top;
biasing means for biasing each free carry member upward relative to the
corresponding guided carry member;
a rear carry member having a rear part of said canvas top secured thereto;
means for slidably guiding said front carry member, said guided carry
members, and said rear carry member on said guide members;
electric driver means for driving said front carry member forwards and
rearward along said guide members;
lock means for selectively locking and unlocking said rear carry member to
a rear given portion of said roof; and
engaging means for latching said free carry members to said guide members
when the free carry members are pressed against said guide members by a
force which is produced when said canvas top is fully stretched.
4. A sunroof structure as claimed in claim 1, further comprising engaging
means for latching said free carry members to said guide member when the
free carry members are pressed against said guide member by a force which
is produced when said canvas top is fully stretched.
5. A sunroof structure as claimed in claim 4, in which said engaging means
comprises:
a hook portion defined by said free carry member; and
an engaging member secured to said guide member, said engaging member being
so shaped as to permit a latching engagement between the hook portion and
the engaging member when said hook portion is forced to press against the
engaging member.
6. A sunroof structure as claimed in claim 4, in which said free carry
member is pivotally supported by said guided carry member through a
spring-biased hinge arm.
7. A sunroof structure as claimed in claim 6, in which said hinge arm is
formed with spaced pieces which are brought into slidable engagement with
given portions of said guide member when said hinge arm is contracted
toward said guide member against the biasing force.
8. A sunroof structure as claimed in claim 7, in which said guided carry
member comprises:
a guided slider slidably engaged with a rail defined by said guide member;
and
a tubular bow member nonrotatably held by said guided slider, said tubular
bow member carrying thereon said canvas top.
9. A sunroof structure as claimed in claim 8, in which said free carry
member comprises:
a free slider pivotally connected through said hinge arm to said guided
slider;
a tubular bow member nonrotatably held by said free slider, said tubular
bow member carrying thereon said canvas top.
10. A sunroof structure as claimed in claim 9, in which each of said guided
and free sliders is formed with first and second tongue portions which are
respectively received in pockets formed by said canvas top.
11. A sunroof structure as claimed in claim 6, in which said lock means
comprises:
a handle bracket slidably engaged with a rail of said guide member;
an operation handle pivotally connected to said handle bracket through a
shaft;
biasing means for pivoting said operation handle in a snap action manner;
a moving bracket secured to said rear carry member, said moving bracket
having an elongate slot through which said shaft passes;
a first link pivotally connected to said handle bracket and having one end
pivotally connected to said moving bracket;
a hook arm to which the other end of said first link is pivotally
connected;
a second link pivotally connected through respective pivot pins to said
operation handle and said first link.
12. A sunroof structure as claimed in claim 11, in which said lock means
further comprises an engaging piece which is secured to the roof to
latchingly catch a hook portion defined by said hook arm.
13. A sunroof structure as claimed in claim 12, further comprising a
biasing spring means which is connected to said hook arm bar biasing the
same in a given direction.
14. A sunroof structure as claimed in claim 6, further comprising a second
lifting mechanism which inclines said front carry member forwardly when
the rear carry member is moved to its foremost position.
15. A sunroof structure as claimed in claim 14, in which said second
lifting mechanism comprises a holding lever which is pivotally connected
to said guide member, said holding lever having at its front part a raised
portion and at its rear part a smoothly extending portion.
16. A sunroof structure as claimed in claim 1, in which said electric drive
means comprises:
a reversible electric motor;
a pinion driven by said motor; and
a geared cable driven by said pinion and having a leading end secured to
said front carry member.
17. A sunroof structure as claimed in claim 16, in which said guide member
has a longitudinally extenging groove through which said geared cable
runs.
18. A sunroof structure as claimed in claim 17, in which said guide member
has an outwardly extended flange portion on which weather strips are
mounted.
19. A sunroof structure as claim in claim 3, in which said engaging means
comprises:
a hook portion defined by said free carry member; and
an engaging member secured to said guide member, said engaging member being
so shaped as to permit a latching engagement between the hook portion and
the engaging member when said hook portion is forced to press against the
engaging member.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates in general to sunroof structures of a motor
vehicle, and more particularly, to sunroof structures of a canvas top type
which uses a canvas as a folding top which is adapted to close an aperture
formed in a roof of the motor vehicle.
2. Description of the Prior Art
Hitherto, various types of sunroof structures have been proposed and put
into practical use particularly in the field of motor vehicles. Some of
them are of a so-called canvas top type which uses a canvas as the folding
top for closing the roof aperture of the vehicle. One of the sunroof
structures of this type is shown in Japanese Utility Model First
Provisional Publication No. 61-37019.
In order to clarify the task of the present invention, the sunroof
structure of the reference will be outlined in the following.
The conventional sunroof structure comprises two guide rails which extend
along lateral sides of an aperture of a vehicle roof. A canvas top for
closing the roof aperture has a front part, a major middle part and a rear
part which are guided by the guide rails through respective carrying
devices. The carrying device for the front part is an elongate front
member to which a front end of the canvas is secured and which has
longitudinal ends slidably guided by the respective guide rails. The
carrying device for the major middle part comprises guided bows and free
bows which alternate with each other. Each guided bow supports thereon the
canvas top and has longitudinal ends constantly guided by the guide rails,
while each free bow supports thereon the canvas top without being
constantly guided by the guide rails. Biasing means is connected to each
free bow to bias the same upward. The carrying device for the rear part of
the canvas top is an elongate rear member which connects the rear end of
the canvas top to a rear end of the roof aperture.
When the sunroof sturcture assumes its full-closed position with the canvas
top fully covering the roof aperture, the free bows are forced to lie down
due to the tension of the fully stretched canvas top against the force of
the biasing means. Thus, as the front member of the canvas top moves
rearward for opening the roof aperture, the free bows are gradually raised
due to reduction of the tension of the canvas top, thereby gradually
forming several folds of the canvas top. When the front member comes to
its rearmost position to allow the sunroof structure to assume a full-open
position, the canvas top is contracted with relatively large folds thereof
placed at the rear end of the roof opening.
However, due to its inherent construction, the conventional sunroof
structure has the following drawbacks.
First, since the folds of the canvas top, which are formed upon
full-opening of the canvas top, are inevitably placed at the rear portion
of the roof aperture, the rear passengers of the vehicle can not enjoy a
sufficiently large open space above them. In fact, under the full-open
condition of the sunroof structure, the folds are placed over the rearseat
passengers. Furthermore, the provision of the front member of the canvas
top promotes this undesirability.
Second, the folds of the canvas top formed upon full-opening of the canvas
top are not assuredly retained. Thus, during movement of the vehicle, the
folds tend to flap, producing noisy sounds.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a canvas top
type sunroof structure which is free of the above-mentioned drawbacks.
According to the present invention, there is provided a canvas top type
sunroof structure in which the opening movement of the canvas top is
achieved from not only the front part thereof but also the rear part
thereof.
According to the present invention, there is provided a canvas top type
sunroof structure in which, when the canvas top is folded to open the roof
aperture, a front carry member of the canvas top is inclined forward,
thereby making a unit including the front carry member and the folded
canvas top compact in size.
According to the present invention, there is provided a canvas top type
sunroof structure, in which when the canvas top assumes an aperture
opening position, a front carry member of the canvas top is kept inclined
forward, thereby to serve as an air spoiler.
According to the present invention, there is provided a sunroof structure
for a motor vehicle having an apertured roof. The sunroof structure
comprises a pair of guide members which extend along respective sides of
the aperture of the roof; a canvas top adapted to cover the aperture; a
front carry member having a front part of the canvas top secured thereto,
the front carry member being slidably guided by the guide members; guided
carry members slidably guided by the guide members and carrying thereon a
major middle part of the canvas top; free carry members carried by the
guided carry members respectively, each free carry member carrying thereon
the major middle part of the canvas top; biasing means for biasing each
free carry member upward relative to the corresponding guided carry
member; a rear carry member having a rear part of the canvas top secured
thereto, the rear carry member being slidably guided by the guide members;
electric drive means for driving the front carry member forward and
rearward along the guide members; and lock means for selectively locking
and unlocking the rear carry member to a rear given portion of the roof.
BRIEF DESCRIPTION OF THE DRAWINGS
Other objects and advantages of the present invnetion will become apparent
from the following description when taken in conjunction with the
accompanying drawings, in which:
FIG. 1 is a horizontally sectional view of one of the paired guide
mechanisms installed in a canvas top type sunroof structure of the present
invention;
FIGS. 2 to 4 are views similar to FIG. 1, but showing different conditions
of the sunroof structure;
FIGS. 5 to 10 are enlarged sectional views taken along the lines V--V,
VI--VI, VII--VII, VIII--VIII, IX--IX and X--X, of FIG. 2 respectively;
FIG. 11 is an enlarged view of a part which is indicated by the arrow "XI"
in FIG. 2;
FIG. 12 is a plan view of a part of the guide mechanism, showing a guided
carry member and a free carry member;
FIG. 13 is a side view taken from the direction of the arrow XIII in FIG.
12;
FIG. 14 is a perspective view of a motor vehicle to which the canvas top
type sunroof structure of the present invention is practically applied;
FIG. 15 is a plan view of the canvas top type sunroof structure of the
invention in a condition wherein the canvas top fully closes the roof
aperture;
FIG. 16 is a sectional view of an engaging member and a hook portion;
FIG. 17 is a bottom view of the engaging member;
FIG. 18 is a view similar to FIG. 13, but showing a guide member by which
the guided carry member is slidably guided;
FIG. 19 is a view similar to FIG. 1, but showing a condition wherein a
front carry member of the canvas top is moving back;
FIG. 20 is an enlarged sectional view of a lock device;
FIG. 21 is a view similar to FIG. 20, but showing a condition different
from that of FIG. 20;
FIG. 22 is a plan view of the lock device; and
FIG. 23 is a view similar to FIG. 1, but showing a condition wherein a unit
including the front carry member, the folded canvas top and the rear carry
member is placed at a middle part of the roof aperture.
DETAILED DESCRIPTION OF THE INVENTION
In the following, the present invention will be described in detail with
reference to the accompanying drawings. In the description, the terms,
such as, front, rear, right, left, forward, rearward and the like, are to
be understood with respect to a motor vehicle on which corresponding parts
are mounted.
Referring to FIG. 14, there is shown a passenger motor vehicle to which a
canvas top type sunroof structure of the present invention is practically
applied. As shown, the vehicle has a rectangular aperture 9 formed in a
roof 1 which includes an inner panel 3 and an outer panel 5 (see FIG. 10).
The sunroof structure comprises generally a pair of (viz., right and left)
guide mechanisms which are respectively arranged at lateral sides of the
aperture 9 and a canvas top 23 which is slided axially by the guide
mechanisms between a full-close position and a full-open position.
Since the guide mechanisms are substantially the same in construction
except for the orientation of parts which constitute each mechanism, the
following description will be directed to only one of the guide mechanism,
that is, the left mechanism,
As is seen from FIG. 5, the guide mechanism comprises a guide member 7
which is secured to the roof 1 and extends along the left (or right) side
edge of the aperture 9. The guide member 7 included a rail 13 which has
two (viz., outside and inside) cable guide grooves 11 and 11 and a raised
wall 15 which extends in parallel with the rail 13. The guide member 7 has
an outwardly extended flange portion 7a on which two longitudinally
extending weather strips 16a and 16b are mounted for the purpose which
will become apparent as the description proceeds.
As is seen from FIG. 11, the raised wall 15 of the guide member 7 has at
its major portion a flat top surface 15a and at its front portion a
smoothly curved recess 17.
As is seen in FIG. 15, a reversible electric motor 19 is mounted to a rear
portion of the apertured roof 1, which is controlled by a manual switch
(not shown) which is positioned near a driver's seat. The motor 19 has a
known speed reduction gear 19a and a pinion 19b which is meshed with a
geared cable 21. The geared cable 21 from the pinion 19b is slidably led
into the outside cable guide groove 11 of the rail 13 from a rear open end
of the groove 11. It is to be noted that the inside cable guide groove 11
is used for receiving an induction part of the other geared cable (not
shown) which extends from the right guide mechanism (not shown) through
the pinion 19b.
As will be seen from FIG. 9, the canvas top 23 which is carried by the left
and right guide mechanisms comprises an outer leather 23a and an inner
leather 23b which serves as a head lining of a passenger room. In order to
sufficiently stretch the canvas top 23 upon full closing of the same, the
outer leather 23a has at each lateral side a longitudinally extending wire
24 installed therein. As will be seen from this drawing, under full
closing condition of the canvas top 23, the wire-installed lateral side of
the canvas top 23 is pressed against the weather strips 16a and 16b.
As will become apparent as the description proceeds, a front part of the
canvas top 23 is supported by a front carry member 25, a major middle part
of the same is by guided by carry members 27 and 27' and a rear part of
the same is carried by a rear carry member 29.
As is seen from FIG. 15, the front carry member 25 is an elongate member
which extends laterally.
As will be seen from FIG. 11, the front carry member 25 has an upper
surface fully covered with the canvas top 23 and a lower surface partially
covered with a turned over portion of the same. The leading end of the
turned over portion is fixed to the front carry member 25.
The front carry member 25 (see FIG. 11) is supported at each lateral side
by a first lifting mechanism 31 which is slidable along the guide member
7. As will be clarified hereinafter, the first lifting mechanism 31 is so
constructed as to incline the front carry member 25 (as shown in the
drawing) forwardly when the latter comes to a front portion of the
aperture 9, that is, to the smoothed curved recess 17 of the raised wall
15.
The first lifting mechanism 31 comprises first and second arms 35 and 37
which are pivotally connected through a pivot pin 33 to constitute a
X-like structure. An upper end of the first arm 35 is pivotally connected
through a pin P.sub.1 to a front bracket 39 secured to the front carry
member 25. A lower end of the first arm 35 is pivotally connected through
a pivot pin P.sub.2 to a driven slider 41 and carries thereon a roller 43.
The driven slider 41 is slidably engaged with the rail 13 of the guide
member 7, and the roller 43 is rotatably put on the raised wall 15. The
roller 43 is so arranged as to be placed on a rear slope of the recess 17
when the canvas top 23 assumes its fully closing position. An upper end of
the second arm 37 is pivotally connected through a pin P.sub.3 to a rear
bracket 40 secured to the front carry member 25. As shown, the rear
bracket 40 has an elongate guide slot 49 to which the pin P.sub.3 is
slidably engaged. A lower end of the second arm 37 is pivotally connected
through a pivot pin P.sub.4 to a drive slider 45 which is slidably engaged
with the rail 13 in front of the driven slider 41.
As is seen from FIG. 5, the drive slider 41 has the geared cable 21
anchored thereto, and thus the drive slider 41 is moved forward and
rearward by the geared cable 21.
The raised wall 15 is so designed that when the drive slider 45 is moved
rearward pushing the driven slider 41 in the same direction, the rear
slope obstructs somewhat a rear movement of the roller 43 of the first arm
35. With this, the second arm 37 is caused to pivot counterclockwise about
the pivot pin 33.
The elongate guide slot 49 of the rear bracket 40 has a shape which
corresponds to a path which is drawn by the pin P.sub.3 when the second
arm 37 is pivoted about the pivot pin 33. Thus, the pin P.sub.3 can
smoothly slide in and along the slot 49.
As is seen from FIG. 15, the guided and free carry members 27 and 27' which
support the major middle part of the canvas top 23 are four in number and
are equally spaced. As shown, the guided and free carry members 27 and 27'
are arranged alternately. As will become apparent hereinafter, the free
carry members 27' are supported by the guided carry members 27
respectively.
As is seen from FIG. 12, each guided carry member 27 comprises a tubular
bow member 50 and a guided slider 51 which nonrotatably carries one end of
the bow member 50. The guided slider 51 is slidably engaged with the rail
13 of the guide member 7.
As is seen from FIG. 13, for achieving the nonrotable connection of the bow
member 50 to the guided slider 51, the guided slider 51 has a boss 51a of
X-shaped cross section and each end of the bow member 50 has a recess 50a
of X-shaped cross section which is mated with the boss 51a. Upon assembly,
the bow member 50 is held with its middle portion somewhat raised from its
both ends.
Referring back to FIG. 12, each free carry member 27' comprises a tubular
bow member 50 and a free slider 53 which nonrotatably carries one end of
the bow member 50. Similar to the case of the guided carry member 27, the
free slider has a X-shaped boss 53a and each end of the bow member 50 has
a X-shaped recess 50a which is mated with the boss 53a.
The free slider 53 is movable upward and downward for the reason which will
be described hereinafter.
As is shown in FIG. 8, each slider 51 or 53 is formed with both a first
tongue portion 55 which is received in a turned over or sack portion of
the outer leather 23a and a second tongue portion 57 which is received in
a turned over or sack portion of the inner leather 23b.
As is seen from FIG. 13 and 18, the guided slider 51 is further formed with
front and rear extensions 56a and 56b. The free slider 53 is provided with
a hook portion 61 which is, when the canvas top 23 assumes its fully
closing position, detachably engaged with an engaging member 59 (see FIGS.
9 and 10) secured to the guide member 7.
It is to be noted that the engaging surface of the engaging member 59 is so
shaped as to permit a latching engagement between the hook portion 61 and
the engaging member 59 when the hook portion 61 is forced to press against
the engaging member 59 in rearward, forward and/or downward direction.
As is best shown in FIGS. 16 and 17, the engaging member 59 comprises a
base portion 59a which is snugly received in a groove 7a of the guide
member 7, a swelling wall portion 59c which extends downward from an upper
surface 59b and an elongate horizontal surface 59d which defines the lower
edge of the swelling wall portion 59c. The hook portion 61 of the free
slider 53 comprises a hook proper having an engaging surface 61a which is
latchingly engageable with the horizontal surface 59d of the engaging
member 59. As is seen from FIG. 16, when the hook proper 61 is pushed
downward, the same is permitted to achieve a latching engagement with the
horizontal surface 59d of the engaging member 59 by flexing the swelling
wall portion 59c by a degree of ".alpha.(alpha)".
As is seen from FIGS. 12 and 13, the free slider 53 is pivotally supported
by a hinge arm 63 which is, in turn, pivotally mounted on the guided
slider 51. The hinge arm 63 is of a channel member (see FIG. 8) and
arranged with its open side facing downward. As is best shown in FIG. 13,
one (viz., lower) end of the hinge arm 63 is pivotally connected through a
pivot pin P.sub.5 to the guided slider 51, while, the other (viz., upper)
end of the same is pivotally connected through a pivot pin P.sub.6 with
the free slider 53. As is seen from FIG. 12, the hinge arm 63 is formed
near the top thereof with spaced pieces 63a and 63a. These pieces 63a and
63a are brought into slidable engagement with the rail 13 of the guide
member 7 when the canvas top 23 assumes its fully closing position. Thus,
under this fully closing position, the hinge arm 63 is prevented from
making a lateral play.
The hinge arm 63 is biased upward by a coil spring 65 which has a
multi-turned portion disposed about the boss 51a of the guided slider 51.
One end 65a of the spring 65 is hooked to the guided slider 51 and the
other end 65b of the same is hooked to the hinge arm 63, as shown in FIG.
12. Thus, it will be appreciated that the free slider 53 is constantly
biased upward by the spring 65 with respect to the guided slider 51.
Referring back to FIG. 15, the rear carry member 29 is an elongate member
which extends laterally.
As is seen from FIG. 10, each lateral end of the rear carry member 29 has a
slider 66 which is slidably engaged with the rail 13 of the guide member
7. Similar to the case of the afore-mentioned front carry member 25, the
rear carry member 29 has an upper surface fully covered with the canvas
top 23 and a lower surface partially covered with a turned over portion of
the same. The leading end of the turned over portion is fixed to the rear
carry member 29.
In order to retain the rear carry member 29 when the canvas top 23 assumes
its fully closing position, two lock devices 67 are provided at right and
left sides of the rear portion of the roof aperture 9.
As will be seen from FIG. 1, each lock device 67 comprises a handle bracket
69 which slidably engaged with the rail 13 of the guide member 7, a moving
bracket 71 which is secured to a lower surface of the rear carry member 29
and connected through a link mechanism 68 to the handle bracket 69, a hook
arm 75 which is pivotally connected to the link mechanism 68 and
detachably engageable with an engaging piece 73 provided on the inner
panel 3 of the roof 1, and an operation handle 77 by which the engagement
between the hook arm 75 and the engaging piece 73 is controlled. The hook
arm 75 is so constructed and arranged that when the canvas to 23 assumes
the fully closing position, manipulation of the operation handle 77
permits a latched engagement of the hook arm 75 with the engaging piece
73.
The construction of the lock device 67 will be described in detail with
reference to FIG. 20. The lock device 67 comprises the handle bracket 69
to which the operation handle 77 is connected through a shaft 77a. The
operation handle 77 is pivotal between a lock position illustrated in FIG.
and an unlock position illustrated in FIG. 20 in a snap action manner.
That is, when a later-mentioned pin P.sub.9 carried by the operation
handle 77 goes beyond a given horizontal imaginary plane which includes
the axis of the shaft 77a, the operation handle 77 is rushed into one
position due to force produced by a biasing means. The shaft 77a is
slidably received in an elongate slot 91 formed in the moving bracket 71
which is secured to the rear carry member 29. In this pivoted portion, the
moving bracket (71) side and the handle bracket (69) side are connected
through the elongate slot 91 through which the shaft 77a passes.
To the handle bracket 69, there is connected a first link 68 through a
pivot pin 68a. An upper end of the first link 68 is pivotally connected
through a pivot pin P.sub.7 to the moving bracket 71, while/ the a lower
end of the first link 68 is pivotally connected through a pivot pin
P.sub.8 to the hook arm 75. A second link 72 is pivotally connected
through respective pivot pins P.sub.9 and P.sub.8 to the operation handle
77 and the first link 68 to effect a synchronous operation of them.
When the operation handle 77 is in the lock position illustrated in FIG.
21, the first link 68 assumes an inclined position. In this condition, the
hook arm 75 is latchingly engaged with the engaging piece 73 of the inner
panel 3 thereby to accomplish a lock condition of the lock device 67. When
the operation handle 77 is in the unlock position illustrated in FIG. 20,
the first link 68 assumes a vertical position. In this condition, the hook
arm 75 is raised disengaging from the engaging piece 73. That is, when the
first link 68 is moved from the vertical position to the inclined
position, a displacement in fore-and-aft direction and a displacement in a
vertical direction are produced by the first link 68.
The hook arm 75 has a hook proper which is latchingly engageable with the
engaging piece 73 secured to the inner panel 3, and a biasing spring 76 is
connected to the hook arm 75 to bias the same in a downward direction. One
end of the spring 76 is hooked to the pin P.sub.7 and the other end of the
same is hooked to a projection formed on the hook arm 75.
As is seen from FIG. 11, a second lifting mechanism 79 is further arranged
at a front portion of the guide member 7, which functions to incline the
front carry member 25 forwardly when the rear carry member 29 is moved to
its foremost position. The second lifting mechanism 79 comprises a holding
lever 83 which is pivotally connected through a pivot pin 81 to the guide
member 7. The holding lever 83 is formed at its front part with an
upwardly raised press portion 85. The lever 83 has a rear part 83a which
extends rearward from the pivoted portion.
As will be seen from FIG. 1, when the canvas top 23 is in the fully closing
position, the press portion 85 is placed below the pivot pin 33 of the
first and second arms 35 and 37 of the first lifting mechanism 31,
assuming its inoperative position. However, when the front extension 56 of
the foremost guided slider 51 rides on the rear part 83a of the holding
lever 83, the press portion 85 is moved upward lifting the pivot pin 33.
Designated by numeral 87 (see FIGS. 1 to 4) is a cover plate which is
secured to and extends forwardly from the rear carry member 29. The cover
plate 87 functions to conceal, from passengers in the vehicle, the various
parts of the canvas top holding mechanism when the canvas top 23 are fully
folded at a front or rear portion of the roof aperture 9.
In the following, operation of the sunroof structure of the invention will
be described with reference to the drawings.
For ease of understanding, the description will be commenced with respect
to a full closed condition of the sunroof structure wherein the canvas top
23 assumes its fully closing position, as shown in FIG. 1. Under this
condition, the first lifting mechanism 31 and the second lifting mechanism
79 assume their contracted positions causing the front carry member 25 to
be flattened, the free carry members 27' assume their lowermost positions
having the hook portion 61 of their free sliders 53 engaged with the
engaging member 59 of the guide member 7, and the rear carry member 29 is
locked to the rear end portion of the roof aperture 9 through the lock
device 67.
When, due to energization of the electric motor 19, the geared cable 21 is
pulled rearward in FIG. 1, the front carry member 25 becomes inclined
forward, due to operation of the first lifting mechanism 31, for the
reason which has been described hereinafore, as is shown in FIG. 2.
Thereafter, the front carry member 25 is moved rearward with its posture
kept inclined in response to the rearward movement of the geared cable 21.
When, the driven slider 41 of the first lifting mechanism 31 is brought
into contact with and pushes the front extension 56a of the foremost
guided slider 51, the guided slider 51 is moved rearward and thus the
corresponding free slider 53 is moved rearward, due to presence of the
folded hinge arm 63, disengaging the hook portion 61 thereof from the
engaging member 59 of the guide member 7. Thus, as will be seen from FIG.
19, the free carry member 27' is gradually raised due to the force of the
biasing spring 66 in response to the rearward movement of the guided
slider 51.
Then, the rear projection 56b of the foremost guided slider 51 is brought
into contact with and pushes the front extension 56a of the next guided
slider 51 causing the next-positioned free carry member 27' to be
gradually lifted. Finally, the front carry member 25 comes to its rearmost
position having two folds of the canvas top 23 formed behind the front
carry member 25, as shown in FIG. 3. Upon this, energization of the
electric motor 19 is ceased, and the full-open condition of the sunroof
structure is established.
Under this full-open condition, the front carry member 25 is kept inclined
as shown in FIG. 3. This inclination brings about an enlargement of the
roof aperture 9 by a degree corresponding the zone denoted by the
reference ".alpha.(alpha)". In fact, the inclination of the front carry
member 25 promotes a compactness of folded canvas top 23 located at the
rear portion of the roof aperture 9. It is further to be noted that the
forwardly inclined front carry member 25 serves as an air-spoiler when the
vehicle moves with the roof aperture 9 open.
When, due to reenergization of the electric motor 19, the geared cable 21
is pushed forward in FIG. 3, the front carry member 25 is moved forward
with its posture kept inclined. The forward movement of the front carry
member 25 pulls, by means of the canvas top 23, the foremost guided slider
51 and the next guided slider 51 one after another. During the forward
movement, the hinge arm 63 of each guided slider 51 is kept inclined.
When the front carry member 25 is brought to its foremost position
stretching the canvas top 23, the front carry member 25 becomes flattened
and the hinge arms 63 of the guided sliders 51 are pressed downward by the
stretched canvas top 23 against the force of the springs 66 and thus the
hook portions 61 of the free sliders 53 are brought into engagement with
the engaging members 59 of the guide member 7. Thus, the full-closed
condition as shown in FIG. 1 is achieved.
When now the operation handle 77 is manipulated, the hook arm 75 of the
lock device 67 is disengaged from the engaging piece 73. With this, the
rear carry member 29 is released from the engaging piece 73. Thus, the
rear carry member 29 can be manually shifted to its foremost postion, as
is shown in FIG. 4. When the rear carry member 29 comes to its foremost
position, the guided sliders 51 of the guided carry members 27 ride on the
rear part 83a of the holding lever 83 thereby moving the press portion 85
of the lever 83 upward and thus lifting the pivot pin 33. Thus, the first
lifting mechanism 31 is actuated to assume its expanded condition
inclining the front carry member 25 forwardly, as shown in FIG. 4.
Because, under this condition, the front carry member 25 is kept inclined,
the guided and free carry members 27 and 27' can be deeply inserted into a
space defined below the front carry member 25 by a degree corresponding to
the zone denoted by reference ".alpha.(alpha)" in FIG. 4. This means that
the roof aperture 9 is increased by a degree corresponding to the zone
".alpha.". Similar to the above-mentioned full-open condition with the
folded canvas top 23 located at the rear portion of the aperture 9, the
front carry member 25 can serve as an air-spoiler.
When, thereafter, the full-closing of the canvas top 23 is required, the
rear carry member 29 is pulled rearward by means of an operator's hand or
hands. When the rear carry member 29 is brought to its rearmost position
pulling and thus stretching the canvas top 23, the operation handle 77 of
the lock device 67 is turned to the lock position. With this, the hook
proper of the hook arm 75 is engaged with the engaging piece 73. During
turning of the operation handle 77 to the lock position, the rear carry
member 29 is somewhat lowered while moving rearward by the degree of "a".
Thus, upon completion of locking of the rear carry member 29, the canvas
top 23 is fully stretched and thus strongly pressed against the weather
strips 16a and 16b on the apertured roof 1 (see FIG. 10) to achieve a
watertight sealing therebetween.
When the rear carry member 29 is moved rearward with the operation handle
77 kept in the lock position, the arrival of the rear carry member 29 to
its rearmost position causes instant locking of the hook proper with the
engaging member 73. That is, a so-called "self-locking" is accomplished in
this case.
In addition to the above, the following operation is further available to
keep the folded canvas top 23 at a middle part of the roof aperture 9. In
this case, the respective areas above the front and rear seats are opened.
That is, first, due to operation of the electric motor 19, the front carry
member 25 is moved rearward or foreward to a middle part of the aperture
9, then, the rear carry member 29 is manually moved to the middle part.
Then, the operation handle 77 is turned to the lock position to press
lateral sides of the canvas top 23 against the weather strips 16a and 16b.
This will be seen from FIG. 23. Under this, the front carry member 25 is
not moved due to the nature of the geared cable 21 connected thereto, and
the rear carry member 29 is kept stationary due to a considerable sliding
resistance of the canvas top 23 to the weather strips 16a and 16b.
When, thereafter, full-closing of the canvas top 23 is required, the front
carry member 25 is moved to its foremost position due to energization of
the electric motor 19, and then, the rear carry member 29 is manually
moved to its rearmost locked position.
The full-closing of the canvas top 23 is also achieved by employing the
following operation.
That is, first, the front carry member 25 is moved backward by energizing
the electric motor 19 to a rear position where the rear carry member 29 is
locked to the engaging piece 73, and then, the front carry member 25 is
moved forward to its foremost position by reenergizing the electric motor
19.
In the following, advantages of the present invention will be described.
(a) Since the opening movement of the canvas top 23 is available from not
only the front part thereof but also a rear part thereof, a large open
space can be provided at various parts of the roof aperture 9. That is, a
full open space can be provided above the rear seat, which is not expected
from the conventional sunroof structure of the above-mentioned reference.
(b) Even if the electric system for controlling the canvas top 23 fails to
operate, the opening movement of the canvas top 23 is achieved by means of
manual labor as has been described hereinabove.
(c) Since the front carry member 25 is kept inclined forward when the
canvas top 23 is fully folded, compactness of a unit including the front
carry member 25 and the folded canvas top 23 is achieved.
(c) Since the front carry member 25 is kept inclined forward when the
canvas top 23 assumes an open position, the same can serve as an air
spoiler.
(d) When the sunroof structure is in the fully closed condition, not only
the rear carry member 29 locked by the lock device 67 but also the front
carry member 25 is substantially locked by the geared cable 21, the
stretched condition of the canvas top 23 is assuredly maintained.
(e) Due to provision of the lock device 67 having the above-mentioned
function, the locking of the rear carry member 29 to the engaging piece 73
induces the vertical and horizontal displacements of the rear carry member
29. Thus, the canvas top 23 can be fully stretched and the rear carry
member can be flush with the outer surface of the roof 1 of the vehicle.
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